Waterproof battery and method of making same.



V R. V. VILLIERS. WATERPROOF BATTERY AND METHOD OF MAKING SAME.

Patented May 21, '1912.

APPLICATION FILED MAY 11, 1910.

/ Snvcufoz RALPH V. VILLIERS, OF EAST FBEETOIVN', MASSACHUSETTS.

WATERPROOF BATTERY AND METHOD OF MAKIIVG SAME.

Specification of Letters Patent.

Application filed May 11, 1910. Serial No. ,560,679.

To all 'whom "it may concern Be it known that I, RALPH V. VILLIERS, acitizen of Canada, residing at East Freetown, in the county of Bristoland State of Massachusetts, have invented certain new and usefulImprovements in Waterproof Batteries and Methods of Making Same, of

4 which the following is a specification.

' dry I apply a coat of paraffin or other sub The object of my inventionis to provide a reliably waterproof electric battery, and one that maybe used successfully under water.; I accomplish this object by thefollowing r'nethod: First, I provide a dry voltaic cell and applytheretoa laccic coating, preferably two coats of shellac, and when stanceadapted to seal the cell against moisture. Plaster of Paris may be usedfor this purpose, though parafiin or a similar wax-like substance ispreferred. The cell thus coated, when the paraflin or'plaster of- Parishas become dry, is incased in a hard mastic composition which is an in'-sulating material and which is adapted to withstand the effects 'ofwater. For this purpose, the cell. is completely incased by ,the cementor other mastic composition, its

"carbon and zinc elements being extended may be coated with shellac orpaint; and

the battery thus made is adapted to work under water.

In the case of a battery composed of a plurality of cells, connected inseries, parallel, or multiple, as desired, the procedure issubstantially the same, except that the several cells having each beenenveloped in paraflin or other suitable sealing substance, as stated,are all completely incased in the cement or mastic composition, whichseparates the cells one from another and also incases the connectionstherebetween,

while the carbon and zinc elements forming the terminal electrodes ofthe circuit maybe extended through the cement or mastic composition orconnected to exterior binding posts, as already explained.

Constructed as thus described, the battery will have the appearance of acement block; but in some cases itmay be preferable to employ a woodenbox or container in place of the iron mold, and to retain said box as apermanent casing; in which event the exterior coating of shellac orpaint would be applied to the outside of the box. For this construction,I provide a box of greater depth than the height of thecell, and applyin the bottom of said box a layer of cement which is allowed tostanduntil quite hard. Then the cell is set within the box, upon its cementbottom, and the box is filled with cement around and over the top of thecell; a wire being first run from the carbon element of the cell to abinding post provided on the outside of the box, while the zinc elementextends through the cement filling and is also provided with a bindingpost. When the cement filling is hard; the whole structure is given oneor more coats of shellac or paint, which completes the. same. 4

In the accompanying drawings, which are to be taken as part'of thisspecification, Figure 1 is a central vertical sectional view of a singlecell battery, and Fig. 2 is a similar view of a multiple cell battery,cmbodying my invention; it being understood that the illustration isdiagrammatic.

The batteries selected for illustrating my invention include theaforesaid wooden box or container which is employed as the mold for acement or plastic filling and as a permanent case therefor.

0 indicates the zinc element, 6 the carbon element, and c theelectrolyte 'of the cell.

d is the shellac coating on the cell, and e is the coat of paraflin. I

f is the wooden box or container, 9 it bottom layer of'cement, audit thecement filling.

2'- is the binding-post connected to the zinc element; and j is the wireleading from the carbon element to the binding-post is on the outside ofthe box.

Z is the exterior coat of shellac.

For a single cell having the dimensions of 2% inches by 6% inches, I usea box three inches square inside and 7% inches in depth,

Patented May 21, 1912 tached to the cement by two bolts embedded.

in the cement, the bolts extending downward about three inches from theupper surface and having nuts or pitij e'ctions on their lower ends soas to hold when the cement is In the foregoing description and-thefollowing claims, thjterin battery {is to be construed as including asingle celi or a plurality of connected cells.

I claim'as my invention, and desireto secure by Letters Patent: 1

1. The method of making a waterproof battery which consists in providinga dry cell with an envelop of parafiin or other sealing substance, andcompletely incasing the same in cement.

2. The method of making a waterproof battery which consists in providinga wooden box with a bottom layer of cement,

providing a dry cell with a laccic coating and an exteriorhermetically-sealing coating, setting said cell in said box and fillingthe latter with'cement, and then applying a finishing laccic. coating.

3. A waterproof battery comprising a box having a cement filling and adryrcell-incased thereby and having a laccic' coating and a coating ofparaflin. 4. A battery having a laccic coat-ingeand a cementitiouscasingmolded over said coating to completely envelop the battery.

- ,5. A battery entirely in'cased in an integral envelop of cement.

6. The 'method of waterproofing a battery which consists in coating theentire outer surface of the battery with a laccic sealing substance, andthen molding around the same, in intimate contact with the lacciccoating, a cementitious envelop which'will completely inclose thebattery.

In testimony whereof I afiix my signature, in presence of twowitnesses.

Witnesses:

JAMES P. DORAN, WILLIAM DoNovAN.

RALPH V. VILLIERs, i

